UPCgen vs Age by Serial Number

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

UPCgen compared with Age by Serial Number
Detail	UPCgen	Age by Serial Number
What it does	Free barcode generator for UPC, EAN, ISBN, and other retail barcodes	Find how old a water heater, furnace or air conditioner is from its serial number
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Freemium	Free
Pricing	Free: 5 codes per day. Starter $9/month (100 codes/month, PNG download, all 9 barcode types, API access). Pro $29/month (3,000 codes/month, bulk CSV, SVG/PDF/EPS exports, Avery+FBA label sheets, API access). Business $99/month (25,000 codes/month, everything in Pro, 5 team seats, priority support).	Not given
Key features	Generate UPC, EAN-13, EAN-8, UPC-E, ISBN, ITF-14, Code 128, FNSKU, and Data Matrix barcodes Valid check digits passing GS1 standard validation Bulk generation up to 10,000 codes at once Export to CSV, PNG, PDF, SVG, and EPS formats Avery and FBA label sheets REST API for developers Bulk CSV upload and download Free registration with no card required Platform compliance for Amazon, Shopify, Etsy, eBay, Walmart	Water heater serial number decoders for Bradford White, A.O. Smith, State, American, Whirlpool, Rheem, Ruud, Lochinvar Furnace and air conditioner decoders for Goodman, Amana, Lennox, Carrier, Trane, American Standard Water heater and furnace error code lookups Water heater sizing calculator for tank and tankless models Rheem water heater status light meanings Goodman furnace LED flash code reference Rinnai V53De tankless water heater code lookup Rheem tankless water heater code lookup
What makes it different	Simple, single-page interface without bloated software or confusing options Valid barcodes that download cleanly in multiple professional formats Supports 50+ e-commerce and retail platforms	Independent reference not affiliated with or endorsed by any manufacturer Distinguishes manufacture date from installation date and emphasizes condition and maintenance over age Covers safety guidance including gas smell warnings and professional contractor recommendations
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	38 −1 (down) since last check	1 no change since last check
Trust Flow (Majestic)	10	1
Citation Flow (Majestic)	30	17
Referring domains (Majestic)	138	4

4 details filled in for both companies.

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